Home / 122,485,780.80-183,728,671.20-45,792,939.60

Finding the Fourth Proportional to 122,485,780.80, 183,728,671.20 and 45,792,939.60

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Solution

The fourth proportional to 122,485,780.80, 183,728,671.20 and 45,792,939.60 is: 68,689,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,485,780.80 : 183,728,671.20 = 45,792,939.60 : x
  2. Step 2: Convert to fraction form
    122,485,780.80/183,728,671.20 = 45,792,939.60/x
  3. Step 3: Cross multiply
    122,485,780.80x = 183,728,671.20 × 45,792,939.60
  4. Step 4: Simplify right side
    122,485,780.80x = 8,413,475,943,049,859
  5. Step 5: Solve for x
    x = 8,413,475,943,049,859/122,485,780.80
  6. Step 6: Final answer
    x = 68,689,409.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.